User manual

7Us e r Ma n U a l
1.4.1 br e a T h I n g CI r C U I T ov e r v I e W
epatientbreathingcircuit,showninFigure1–4,consistsofthefollowing:
• Circuittubingtodeliverairfromthedevicetoyourinterface(e.g.,mask)
• Amaskorotherpatientinterfacedevicetodelivertheprescribedpressuretoyournoseor
nose and mouth, depending on which interface has been prescribed for you
• Anexhalationdevicetoventexhaledairfromthecircuit
Circuit
Tubing
Exhalation
Device
Patient Interface
Circuit with Separate
Exhalation Device
Circuit with Mask with
Integrated Exhalation Port
Flexible
Tubing
Connector
Mask's
Connector
Exhalation
Port
fI g U r e 1–4 Ty p I C a l br e a T h I n g CI r C U I T s
NOTE: e exhalation port may be part of the interface or may be part of a separate
exhalationdevice,butisrequiredtominimizethepotentialforCO
2
rebreathing.
1.5 gl o s s a r y
e following terms and acronyms appear throughout this manual:
Te r M /aC r o n y M de f I n I T I o n
Active State The state of the device when power is applied, the airow is on, and
the device is providing therapy.
Apnea A condition marked by the cessation of spontaneous breathing.
CPAP Continuous Positive Airway Pressure
OSA Obstructive Sleep Apnea
Ramp A feature that may increase patient comfort when therapy is started.
The ramp feature reduces pressure and then gradually increases
the pressure to the prescription setting so you can fall asleep more
comfortably.
Safe State The state in which the device does not provide therapy. The device
enters this state if an error is detected.
Standby State The state of the device when power is applied but the airow and
humidication is turned o.